Ubuntu 10.4 eth0 – not available! – RTL-8139/8139C/8139C+ (rev 10)

I had a customer today who brought in a laptop and wanted to switch over to Ubuntu linux. I always try to go the extra mile for people who want to convert to Linux. After installing Ubuntu 10.04 LTS, I rebooted and to my dismay the wired (eth0) interface was not working. I always run into wireless problems with Linux but its pretty rare that a wired interface doesn’t work. Below I show the fairly simple fix.

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After 3 days of painful troubleshooting, i stumbled across this article. i did a fresh ubuntu 10.04 install, which left me with an internet connection but couldn’t actually load any websites or use the update manager. This solution solved all of that, thank you so much for posting this.

I would think there are a couple things that could be wrong. First it may be that for some reason mii-tool doesn’t like the NIC you have installed for one reason or another. I would double check your default route, the configuration of the NIC itself, and verify the NIC works without issue in another computer. When it gets down to issues like the one you are stating above it is hard to troubleshoot without physical access to the computer so unfortunately I am not going to be a ton of help.

Once you get it figured let us know what it was so others that run into the same issue will find resolution when reading this article.

I have exactly the same problem, but, after doing your steps, it appears “connection established”, nevertheless, i can’t load any website.
I have been recommended this website by the forum http://ubuntuforums.org/showthread.php?p=10364656#post10364656
where i am trying to solve my problem too, in case you need more information.